/*
 * Copyright (C) 2012 DataSymphony (http://datasymphony.com.au)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package au.com.ds.restty.ssl;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.UnknownHostException;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.TrustManager;

import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.conn.scheme.LayeredSchemeSocketFactory;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;

public class EasySSLSocketFactory implements LayeredSchemeSocketFactory {

	private SSLContext sslcontext = null;

	private static SSLContext createEasySSLContext() throws IOException {
		try {
			SSLContext context = SSLContext.getInstance("TLS");
			context.init(null, new TrustManager[] { new EasySSLX509TrustManager(
					null) }, null);
			return context;
		} catch (Exception e) {
			throw new IOException(e.getMessage());
		}
	}

	private SSLContext getSSLContext() throws IOException {
		if (this.sslcontext == null) {
			this.sslcontext = createEasySSLContext();
		}
		return this.sslcontext;
	}

	private Socket createSocket() throws IOException {
		return getSSLContext().getSocketFactory().createSocket();
	}

	@Override
	public boolean isSecure(Socket socket) throws IllegalArgumentException {
		return true;
	}

	public boolean equals(Object obj) {
		return ((obj != null) && obj.getClass().equals(
				EasySSLSocketFactory.class));
	}

	public int hashCode() {
		return EasySSLSocketFactory.class.hashCode();
	}

	@Override
	public Socket connectSocket(Socket sock, InetSocketAddress remoteAddress,
			InetSocketAddress localAddress, HttpParams params) throws IOException,
			UnknownHostException, ConnectTimeoutException {
		int connTimeout = HttpConnectionParams.getConnectionTimeout(params);
		int soTimeout = HttpConnectionParams.getSoTimeout(params);

		SSLSocket sslsock = (SSLSocket) ((sock != null) ? sock : createSocket());

		if (localAddress != null) {
			sslsock.bind(localAddress);
		}

		sslsock.connect(remoteAddress, connTimeout);
		sslsock.setSoTimeout(soTimeout);

		return sslsock;
	}

	@Override
	public Socket createSocket(HttpParams arg0) throws IOException {
		return getSSLContext().getSocketFactory().createSocket();
	}

	@Override
	public Socket createLayeredSocket(Socket socket, String target, int port, 
			boolean autoClose) throws IOException, UnknownHostException {
		return getSSLContext().getSocketFactory().createSocket(socket, target, port, autoClose);
	}
}